| Jmb Landscape Design | Jmb Landscape Design | — | (916) 474 9089 | Windows, patio, painters | Lincoln · Placer County | — | — |
| Jmes Telecom Contracting LLC | Jordan Ray Moore | — | (916) 809 3601 | Electricians | Roseville · Placer County | — | — |
| Jmg Electric | Jason Loren Gonzales | impallari@gmail.com | (530) 391 9900 | Electricians | Roseville · Placer County | — | — |
| Jnd Rankin Construction INC | Donald Vernon Rankin | — | (916) 296 1339 | GC, remodel, ADU | Lincoln · Placer County | — | — |
| Jnj Construction | Joseph Anthony Papotto | — | (916) 223 9845 | GC, remodel, ADU | Roseville · Placer County | — | — |
| Joe Chapman | Joe Chapman | — | (916) 652 3241 | Other | Loomis · Placer County | — | — |
| Joe Construction | Ardelean Iosif | — | (916) 517 0068 | GC, remodel, ADU | Penryn · Placer County | — | — |
| Joe Electric | Jose Eleno Villarreal | anapbm@gmail.com | (530) 355 2896 | Electricians | Lincoln · Placer County | — | — |
| Joe Mumford Plumbing Co | Deborah Ardis Mumford | — | (530) 878 2566 | Other | Auburn · Placer County | — | — |
| Joe Orlando | Joe Orlando | — | (209) 658 5042 | Other | Roseville · Placer County | — | — |
| Joe Pace Construction INC | Joseph Benjamin Pace | — | (530) 277 2737 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| Joe Rutter Drywall | Joe Rutter Drywall | — | (916) 257 9301 | Other | Lincoln · Placer County | — | — |
| Joe's Cabinets | Joe's Cabinets | — | (916) 778 7158 | Other | Auburn · Placer County | — | — |
| Joel B Nobrega | Joel B Nobrega | — | (831) 521 3059 | GC, remodel, ADU | Carnelian Bay · Placer County | — | — |
| Joel D Sizemore | Joel D Sizemore | — | (916) 216 9605 | GC, remodel, ADU | Loomis · Placer County | — | — |
| Joel Gimbert Flooring Service | Joel Peter Gimbert | — | (530) 525 5925 | Other | Tahoe City · Placer County | — | — |
| Johannsson Electric INC | Jon Erik Johannsson | jeinvoices@yahoo.com | (530) 362 6732 | Electricians | Carnelian Bay · Placer County | — | — |
| John Allen Nelson | John Allen Nelson | — | (775) 771 3243 | Other | Kings Beach · Placer County | — | — |
| John Brink Construction INC | John Edward Brink | — | (530) 583 2005 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| John C Tyer | John C Tyer | — | (916) 367 1342 | GC, remodel, ADU | Roseville · Placer County | — | — |
| John Chamberlain Construction | John Paul Chamberlain | — | (530) 412 3161 | GC, remodel, ADU | Homewood · Placer County | — | — |
| John D Segale | John D Segale | — | (530) 906 9121 | GC, remodel, ADU | Tahoma · Placer County | — | — |
| John Daly Construction INC | John Allan Daly | — | (916) 316 0445 | GC, remodel, ADU | Loomis · Placer County | — | — |
| John Doherty Construction INC | John Athon Doherty | — | (530) 581 0896 | GC, remodel, ADU | Tahoe City · Placer County | — | — |
| John E Kukuruda | John E Kukuruda | — | (916) 655 3509 | Electricians | Roseville · Placer County | — | — |
| John Iles Construction | John Morris Iles | — | (559) 826 8533 | Other | Homewood · Placer County | — | — |
| John Ingram Construction | John Theodore Ingram | — | (916) 677 9513 | GC, remodel, ADU | Roseville · Placer County | — | — |
| John Livers Carpet Installs | John Livers Carpet Installs | — | (916) 955 7825 | Other | Rocklin · Placer County | — | — |
| John M Fehrman | John M Fehrman | — | (530) 545 0141 | Electricians | Applegate · Placer County | — | — |
| John Mourier Construction INC | Stephen John Noble | — | (916) 782 8879 | GC, remodel, ADU | Roseville · Placer County | — | — |
| John Paul F Jennings | John Paul F Jennings | — | (805) 216 8537 | GC, remodel, ADU | Homewood · Placer County | — | — |
| John Ragan Construction | John Jay Ragan | — | (530) 583 3447 | Other | Tahoe City · Placer County | — | — |
| John Robert Fitch | John Robert Fitch | — | (530) 906 4670 | GC, remodel, ADU | Auburn · Placer County | — | — |
| John Ruffner Handyman Services | John Donato Ruffner | — | (916) 470 2642 | GC, remodel, ADU | Roseville · Placer County | — | — |
| John W Stewart Jr | John W Stewart Jr | — | (916) 871 3024 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| John Walker Heating And Cooling INC DBA Ace Heating And Cooling | Johnny M Walker | — | (916) 630 2290 | HVAC | Rocklin · Placer County | — | — |
| Johnnie Jones Roofing | Margaret Jean Jones | — | (916) 652 9737 | Other roofers | Loomis · Placer County | — | — |
| Johnson & Sampson Construction INC DBA J & S Asphalt | Todd Christopher Johnson | — | (916) 624 8855 | Other | Rocklin · Placer County | — | — |
| Johnson Construction | Justin Matthew Johnson | — | (916) 380 0565 | GC, remodel, ADU | Granite Bay · Placer County | — | — |
| Johnson Erik Tile | Erik James Johnson | — | (916) 987 7750 | Other | Rocklin · Placer County | — | — |